text: # Photons in sunlight hit the solar panel and are absorbed by semi-conducting materials.
  # Electrons (negatively charged) are knocked loose from their atoms as they are excited. Due to their special structure and the materials in solar cells, the electrons are only allowed to move in a single direction. The electronic structure of the materials is very important for the process to work, and often silicon incorporating small amounts of boron or phosphorus is used in different layers.
  # An array of solar cells converts solar energy into a usable amount of direct current (DC) electricity.